sanoTTS puts a complete neural TTS stack in 294k parameters and 337 KB, running on a $3 microcontroller
GitHub (via r/LocalLLaMA, 332 upvotes)·medium signal
Released September 3, sanoTTS spans 294k to 2.2m parameters with 11 voices across 6 languages, claiming 244x smaller than Kokoro and 9000x smaller than Voxtral TTS. The 1.51m Amy model scores SCOREQ 4.13 against Inflect Nano's 3.81 (4.63m) and KittenTTS's 3.02 (15m), with about 2% WER measured through Whisper. On an ESP32 it hits an RTF of 0.225, four seconds of audio generated per second of compute, and there is a WebAssembly build via `npm install sanotts-web`.